Winter Boots - Which Ones?

I'm looking to buy some winter boots and Sorel caught my eye. I was wondering if anyone had experience with them? People seem to like them (even if their newer ones made in China ones are not as good as the older made in Canada ones).

I guess one decision would be nubuck vs full grain. I'm leaning towards full grain... as I can condition those and they'll likely last longer and stay waterproof.

Then there is the difference between the lighter / pebbled leather and the heavier full grain leather. What do you guys think there?

Lastly, if I were to decide on the heavier leather (Caribou Wool) - there are two versions. It looks to me like the liner, coloring, and look of the leather is really the only difference?

And i'm open to suggestions to other similar looking and useable boots. I also looked into Baffin and they have this boot that looks nice: http://www.baffin.com/product-p/reacm004.htm. But not as much review on that one.

I like the style of leather top and rubber bottom, so looking for thatt with some (preferrably removable) insulation.Edited by Jay687 - 11/9/12 at 2:00pm

Kamik is basically Sorel before the international buy out. After they stopped being made in Canada, I've heard Sorels have serious problems with seam waterproofing. Some of the Kamik boots are still made in Canada (its what I have), I also have some made in Canada Baffins, although they are function only, no style. No complaints on either, solid performance all around.